Moreover, he often made a slip of the pen and a slip of the tongue.

并且他常常有笔误和失言。

He got them to fall out of an exercise book, turn up inside a banana skin, and hide inside a computer program. Without the slightest effort, he could get Alberto to make a slip of the tongue and call Sophie Hilde.

他让他们从练习本上掉下来， 出现在香蕉皮里， 然后藏在计算机程序里。 毫不费力，他就能让阿尔贝托口误， 给索菲·希尔德打电话。